Konica Minolta bizhub 4020 Service Manual page 12
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5.8.5
Procedures for rewriting the firmware in recovery mode (bizhub 3320 only) ................. 233
6.
Repair information ......................................................................................................................... 234
6.1
Removal precautions .............................................................................................................. 234
6.1.1
Data security notice ........................................................................................................ 234
6.1.2
Handling ESD-sensitive parts ......................................................................................... 234
6.1.3
Controller board/control panel replacement ................................................................... 235
6.1.4
Ribbon cable connectors ................................................................................................ 236
6.1.5
Printhead unit adjustments ............................................................................................. 245
6.2
Removal procedures .............................................................................................................. 249
6.3
Left side removals .................................................................................................................. 249
6.3.1
Left cover removal .......................................................................................................... 249
6.3.2
Main drive gearbox removal ........................................................................................... 250
6.3.3
MPF gearbox removal .................................................................................................... 252
6.3.4
Reverse solenoid removal .............................................................................................. 255
6.3.5
Cartridge gearbox removal ............................................................................................. 256
6.3.6
Duplex gear assembly removal ...................................................................................... 257
6.4
Right side removals ................................................................................................................ 259
6.4.1
Right cover removal ........................................................................................................ 259
6.4.2
Memory access door removal......................................................................................... 261
6.4.3
Tray present sensor removal .......................................................................................... 261
6.4.4
Cooling fan removal ........................................................................................................ 262
6.4.5
Controller board removal ................................................................................................ 263
6.4.6
Controller board shield removal ...................................................................................... 265
6.4.7
Toner cartridge smart chip contact removal ................................................................... 267
6.4.8
Modem removal .............................................................................................................. 269
6.5
Front removals ....................................................................................................................... 271
6.5.1
Left front mount removal ................................................................................................. 271
6.5.2
Right front mount removal .............................................................................................. 271
6.5.3
Transfer roll removal ....................................................................................................... 272
6.5.4
Cartridge plunger removal .............................................................................................. 273
6.5.5
Name plate cover removal .............................................................................................. 275
6.5.6
Front bin cover removal .................................................................................................. 276
6.5.7
Control panel assembly removal .................................................................................... 277
bizhub 4020/3320 Service Manual
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